Introduction to fractions
- 1. Fractions A fraction is a number that names an equal part of a whole.
- 2. Vocabulary • fraction • numerator • denominator • equivalent fraction
- 3. The denominator is the number below the bar in a fraction. It tells the total number of equal parts. The numerator is the number above the bar in a fraction. It tells how many of the equal parts of the whole or group are being considered. 34three-fourths
- 4. Shaded parts Equal parts in a whole 3 5 1 part shaded 1 2 2 equal parts 3 parts shaded 5 equal parts
- 6. What is the numerator in the following fractions? 4 5 2 1 6 3 8 10 5 3 9 5 What is the denominator in these fractions?
- 7. Jose has three pencils. He sharpened one pencil. What fraction represents the sharpened part of the group? How many are in the whole or group? (denominator) 13 How many are in the part we are talking about? (numerator)
- 8. Equivalent Fractions 1 1/2 1/2 1/3 1/3 1/3 1/4 1/4 1/4 1/4 1/5 1/5 1/5 1/5 1/5 1/6 1/6 1/6 1/6 1/6 1/6 1/8 1/8 1/8 1/8 1/8 1/8 1/8 1/8 1/9 1/9 1/9 1/9 1/9 1/9 1/9 1/9 1/9 1/10 1/10 1/10 1/10 1/10 1/10 1/10 1/10 1/10 1/10 1/12 1/12 1/12 1/12 1/12 1/12 1/12 1/12 1/12 1/12 1/12 1/12 Whole Halves Thirds Fourths Fifths Sixths Eighths Ninths Tenths Twelfths